N.B: Fixed some missing icons on KDE. But the icon theme isn't look polished. Have to do some works. This is like an initial beta release for KDE. Tested only on KDE Neon.
GitHub repo for KDE icon theme: Go to the GitHub repo of this icon theme and select the "KDE" branch.

so you claim in your changelog you updated the file amnager icons, but in the git change, that never seemed to happened:
https://github.com/USBA/Cupertino-iCons/commits/master
Are you not making these downloads archives from the git master?

I have three separate GitHub repositories and I can put only one link for this icon theme.
That’s why I’ve linked all three GitHub repositories as external links in “Files” of this icon. But now I can’t see them in the files list of this icons theme.
Did you guys remove those external links?
It’s OK but I update all the things I’ve mentioned in the Changelog.

Hello, I have detected an error. In the Nautilus file system, directory icons are not seen properly for generic directories and for hidden directories (. "Dir_name"). This happens in the "Cupertino Mojave" icon pack, however, the "Cupertino" icon pack does not even show any directory, it goes blank. Send reference images through Google Photos.
Cupertino-Mojave.tar.xz: https://photos.app.goo.gl/94R8Gg2oRk9KDUE9A
Cupertino.tar.xz: https://photos.app.goo.gl/CyTPHGE8x8x5WRXa9

Very good!!!
But one thing;
file "apps/128/gnome-control-center datetime.png" and file "apps/128/gnome-control-center sound.png" includes space.
So gtk-update-icon-chache fails.
After replace the space to hyphen-minus, it success.